Sound attenuation apparatus

Details Sound attenuation apparatus Sound attenuation apparatus

1989-08-10

1991-06-18

Fuller, Benjamin R.

Acoustics

Sound-modifying means

By wave interference

181286, 181290, 181295, 381 71, 381 94, 52144, E04B 182, F01N 106

Patent

active

050242881

ABSTRACT:
Apparatus for reducing acoustic transmission from mechanical or acoustic sources by means of a double wall partition, within which an acoustic pressure field is generated by at least one secondary acoustic source. The secondary acoustic source is advantageously placed within the partition, around its edges, or it may be an integral part of a wall of the partition.

REFERENCES:
patent: 3229429 (1966-01-01), Conrad
patent: 3879578 (1975-04-01), Wildi
patent: 4177874 (1979-12-01), Angelini et al.
patent: 4589137 (1986-05-01), Miller
patent: 4600078 (1986-07-01), Wirt
patent: 4665549 (1987-05-01), Eriksson et al.
patent: 4715559 (1987-12-01), Fuller
patent: 4783817 (1988-11-01), Hamada

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